package com.superlistaportable.productList;
 
import java.util.HashMap;
import java.util.List;

import android.content.Context;
import android.graphics.Typeface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.Button;
import android.widget.TextView;

import com.example.superlistaportable.R;
 
public class ExpandableListAdapter extends BaseExpandableListAdapter {
 
    private Context _context;
    private List<String> _listDataHeader; // header titles
    // child data in format of header title, child title
    private HashMap<String, List<String>> _listDataChild;
	private ProductListModel model; 
    
    
    public ExpandableListAdapter(Context context, ProductListModel model) {
        this._context = context;
        this.model = model;
        this._listDataHeader = this.model.getListHeaders();
        this._listDataChild = this.model.getListChildren();
    }
 

    @Override
    public Object getChild(int groupPosition, int childPosititon) {
        return this._listDataChild.get(this._listDataHeader.get(groupPosition)).get(childPosititon);
    }
 
    @Override
    public long getChildId(int groupPosition, int childPosition) {
        return childPosition;
    }
 
    @Override
    public View getChildView(int groupPosition, final int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
 
        final String childText = (String) getChild(groupPosition, childPosition);
 
        if (convertView == null) {
            LayoutInflater infalInflater = (LayoutInflater) this._context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.product_list_child_item, null);
        }
        
       
        TextView txtListChild = (TextView) convertView.findViewById(R.id.lblListItem);
        txtListChild.setText(childText);
        
        updateCostText(groupPosition, childPosition, convertView);
        
        final int group = groupPosition; 
        final View v = convertView;
        
        Button removeItem = (Button) convertView.findViewById(R.id.removeItem);
        removeItem.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				model.removeStockTo(group,childPosition);
				updateCostText(group, childPosition, v);
			}
		});
        
        Button addItem = (Button) convertView.findViewById(R.id.addItem);
        addItem.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				model.addStockTo(group,childPosition);
				updateCostText(group, childPosition, v);
			}
		});
        
        
       
        return convertView;
    }


	private void updateCostText(int groupPosition, final int childPosition, View convertView) {
		TextView cost = (TextView) convertView.findViewById(R.id.cost);
        if(model.stockOf(groupPosition, childPosition) == 0){
        	cost.setText("$" + model.costOf(groupPosition,childPosition));
        } else {
        	cost.setText("$" + model.costOf(groupPosition,childPosition)+ " (" + model.stockOf(groupPosition, childPosition) + ")");
        }
	}
 
    @Override
    public int getChildrenCount(int groupPosition) {
        return this._listDataChild.get(this._listDataHeader.get(groupPosition))
                .size();
    }
 
    @Override
    public Object getGroup(int groupPosition) {
        return this._listDataHeader.get(groupPosition);
    }
 
    @Override
    public int getGroupCount() {
        return this._listDataHeader.size();
    }
 
    @Override
    public long getGroupId(int groupPosition) {
        return groupPosition;
    }
 
    @Override
    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {

        String headerTitle = (String) getGroup(groupPosition);
        if (convertView == null) {
            LayoutInflater infalInflater = (LayoutInflater) this._context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.product_list_group, null);
        }
 
        TextView lblListHeader = (TextView) convertView.findViewById(R.id.lblListHeader);
        lblListHeader.setTypeface(null, Typeface.BOLD);
        lblListHeader.setText(headerTitle);
 
        return convertView;
    }

  
    @Override
    public boolean hasStableIds() {
        return false;
    }
 
    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {
        return true;
    }
}